Assightor to frank w



June 1 D. D. EVINS ATTACHIBNT FOR CHIROPRACTIC TABLES 3 origina Filed 9a. 23. 1920 f b Ju/pbzm mag W723,

.Reissued June 14, 1 927.

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Origin!!! Ho; 1,504,111; dated August 1924, Serial reissue flled August 4,.19'26. Serial No. 127,190.

This invention relates to chiropractic tables and the principal object is to provide an attachment for a table of this kind with power driven means for moving the table 5 from horizontal position to substantially a vertical position and viceversmv Electric or water motors, gas, steam or air engines may be used for power, but in'uthis disclosure an electric motor attachment is described.

this nature in which both the movement of the table from horizontal to vertical position and from vertical to horizontal position may be attained by movement of the powershaft I and gears in the same directions in both instances without the necessity of resorting to reversing mechanisms, using one half cycle for lowering and the otherhalf cycle for raising. I v

Another object is to, provide a substan tially noiseless gearing for effecting :said movements. p 7 Another object is to provide an automatic st ingdevice. Y v y ther objects will appear from the fol- :low ing descri tion and claims. f One embodiment of the invention is shown in the accompanying drawing comprising one sheet, in -which V f Figure 1 is a side elevation of my im' proved invention, the table being shown in a horizontal position.

Figure 2 is a sectional view taken on the lines 22oi Figurel. I

Figure 3 is an enlarged vertical sectional view therethrough, the table being shown in its vertical position.

Figure 4' is a detail spring. 1 I,

Like characters of reference refer to like parts in all views. ferring to the drawings in detaihl, represents the base'of a chiropractic table, and 2 represents a pair of upri%)hts which carry 45 at their upper ends theta le top 3 pivotally mounted at 4: and provided with a, suita 1e counter weight 5. The counter wei ht may be omitted if desired.

hfounted on the base 1 is an electric motor conventionally shown at'B and includinp a power shaft 7. Also mounted on view of the tension Another object is to provide a device of out attention.

. an 1 wardly extending arm 24 the free end No. 419,122, filed October 23, 1920. Application for which meshes with a gear 15 mounted on a 50 stub shaft 16. Shaft 16 has hearings on the side walls of the housing '8' and extends beyond said walls at each side and has secured to it arms 17. To the free end of, each arm 17 is attached one end of a respective connecting rod18, the other end of which is pivoted, to the under side of the table 3 at 19; It is, of. course, understood that the number oi gears may varyaccording to the desired speed and power ratio between the power shaft and the table, I

The gear box 8 is oil tight and filledwith oil 20 to render operation of thege'ars substantially noiseless and insure long life with- Mounted for rotation with shaft 16; a pair of diametrically extending arms 21. A shaft, 22 is mounted for oscillation in bearlngs 23 on the base and has secured to it of w ich'is in the same plane as the arms 21 and is adapted to be moved into and out of the path of arms 21 by oscillation of shaft 22. Arm 24 carries one member 25 of a switch having contacts 25 mounted on the framework; which contacts are connected in the motor circuit so that when member 25' contacts member 25, the circuit is closed and the motor will be operated. Shaft 22 is (provided with foot levers or pedals 26, an is provided with a radially extending lug or pin 27in the outer face of which is provided a' bearing for the lower end of a flat spring 28 secured to theframework at 29. The construction and arrangement of this spring are best shown in Fi re 4; r

A pin 30 extends radially from shaft 22 and carries an upwardly extendin link' 31 which is connected to a brakeand; mounted inoperative relation to a brakedrum 33 on the ower shaft 7. 1

In operation; he table is normally in th vertical position shown in Figure 3. The operator places his foot on pedal 26 and the shaft 22 is oscillated until pressure of spring 28 passes the center of shaft'22, then said spring rotates the shaft until the switch 2?, is closed. thereby starting the motor. Thereupon shaft 7 causes worm 11 to drive gears 12, 14 and 15, and through shaft 16 rotates arms 17 thereby moving rods 18 to rotate the table 3 about its pivot until the table approaches its horizontal position as shown in Figure 1. One of the arms 21 will now come against arm 24 and move it rearwardly until the spring 28 moves over the center of shaft 22, whereupon said spring will oscillate shaft 22 back to its -norma1 or inoperative position with the switch 25, 25 open. As the shaft 22 moves back to normal position pin 30 and link 31 raise the brake-band 32 the drum 33 and this brake tends to quickly overcome the momentum and stop the table. The parts are to be so positioned that the stopping points in raising and in lowering will be with the eccentric 17 on dead center so that when the motor is started, the

load will be at its lightest and the movement slightest.

than the whole of my invention limited only by the appendedclaims.

hat is claimed as new is 1. A chiropractic table comprising a base, a platform pivotally mounted above said base, a gear box mounted on said base below I said platform, gearing mounted in'said gear box, a motor having its shaft extending into said gear box and provided with a worm for operating said gearing, arms operable by said gearing, connecting rods operable by said arms and having pivotal connection with said platform, an, electric switch for controlling the operation of said motor, foot actuated means for closing said switch to cause movement of said platform in either;

directiomand automatic means for opening said switch upon the limit of movement of said platform in either direction, and a brake device automatically operable by the opening of said switch for overcoming the momentum of said platform.

,2. K table of the character described come prising a base, a pair of spaced uprights rismg from the base, a top pivotally secured adjacent one end of the upper ends of the uprights, a gear box fixed to the base, a mointo contact with This prevents sudden and jerky stop and start; and permits the use of tor driven shaft passing longitudinally therethrough, a worm fixed to the inner end of the motor driven shaft, a stub shaft arranged at right anglesto a motor driven shaft and rotated through the medium of a train of gears associated with the worm, arms secured to the ends of the stub shaft, connecting rods pivotally secured to the arms and table top respectively in a manner whereby said table top is moved in a vertical plane, a pair of diametrically oppositely disposed extending arms formed on the stub shaft, switch means for controlling the mo tor, and arranged in the path of the diametrically oppositely disposed extending arms, a foot control lever mounted for oscillatory -movement to the base, an arm rising from said foot control lever and carrying one of the members of the switch, and brake means associated with said foot lever and including means fixed, to the motor driven shaft.

3. A chiropractic table comprising a base, supporting means upwardly projecting from said base, a table member pivoted on said supporting means for rotation about a horizontal axis, a motor associated with said base, a power shaft, power transmission means whereby movement of said shaft in a single direction may cause movement of said table member in reverse directions, and means for automatically terminating the movement of said shaft at the termination of the predetermined excursions of the table ing from said base, a table member pivoted on said supporting means for rotation about a horizontal axis, a, motor associated with said base, a driving connection between said motor and said table member and automatically operable braking means adapted to overcome the momentum of the driving members and to terminate the movement of the table member at the end of its predetermined excursions, including a drum on the motor shaft, an arcuate brake band associated with it, and means for automatically bringing them into frictional engagement.

5. A chiropractic table comprising a base, a supporting means upwardly projecting from said base, a table member pivoted on said supportingmeans for rotation about a horizontal axis, a motor associated with said base, a driving connection between. said said supporting means for rotation-about ahorizontal axis, a motor associated with said base, a (ll'lV1I1g-- connection between said motor a'ndsaid table member, a motor controlling switch having; a fixed member mounted above said base, amovable member opposed thereto,- a supporting element upon which said movable member is mounted, means for moving said supporting element and said movable'switch member into i switch closing position, automatic means for moving them into open position, braking means; for said table member, and means,

associated with said supporting elementand responsive to its; movement, for actuating said braking means when the switch 1 is opened.

7 A chiropractictable comprising a base,

asupporting means upwardly projecting from said base, a table 'member pivoted on said" supporting means forrotation about a horizontal axis, a motor associated'with said base, a drivingconnection between said motor and said table member, an electric switch adapted to control said motor and automatic means for opening said switch at the termination of the predetermined excursions of 'the table member including a shaft adapted to be rotated in a single direction and a plurality of members outwardly projected therefrom and adapted in turn to engage the switch as the shaft is rotated.

8. A chiropractic table comprising a base,

a supporting means upwardly projecting from said base, a table member pivoted on said supporting means for rotation about a horizontal axis, a motor associated with said -base, a driving connection between said motor and said table member, an electric switch adapted to control said motor and automatic -means for opening said switchat the termination of the predetermined excursions of the table member, said switch comprising a fixed member, a movable member opposed thereto, a supporting elementupon which said movable member is mounted and means. associated with the driving connection between motor and table member, adapted to move saidswitch into open position.

9. A chiropractic table comprising a base, a supporting means upwardly projecting from said base, atable member pivoted on said supporting means for rotation about a horizontal axis, a motorass'ociated with'said base, a driving connection between said motor and said table member, an electric switch adapted to control the motor, said switch comprising a fixed member, a movable'member opposed thereto, a pivoted supporting element upon which such movable member is mounted, and anarm, associated with the driving connection: between .motor and table member, adapted to engage said? supporting element to movesaidrswitch into open position at the termination ofyeach pie-- 'determinedexcursion of the table member.

supportin means for rotation about: a; horizontal axis, a 'motor associated with. said base, a power shaft, meanswhereby movement of said shaft in 'a single direction. may cause the movement of said table memberin reverse directions, an electric switch adapt edto control said motor, saidswitch' com; prising a fixed member, a movablemember opposed: thereto, and av plurality of knockout members adapted to be" actuated in response to rotation-of saidpower shaft, one of-said members being positioned to: contact; the movable switchmember and to open the switch at the termination of each predetermined excursion or the table member in either direction.

11'. AR chiropractic table comprising-abase, asupporting means. upwardly projecting from said base, a table member pivoted on said supporting means horizontal axis, a motor associated with said base, a power shaft, means whereby movement of said shaft in a single direction may cause movement of said table member in reverse directions, and means for automatically terminating the movement of said shaft at the termination of the predetermined excursions of the table member, including an electric switch adapted to control said motor and automatic means for opening said switch at the termination of the predetermined excursions of the table member, said switch ineluding a fixed member, a movable member, a rock shaft, an arm on which said movable member is'mounted, and a member, associated with the driving connection between motor and table member, adapted to engage said arm and to open the switch.

' at the termination of the predetermined excursions of the table member, including an electric switch adapted to control said motor and automatic means for opening said switch at the termination of the predetermined excursions of the table member, said switch including a fixed member, a movable member, a rock shaft, an arm thereon on which said movable member is mounted, and a for rotation about a member, associated with the driving connection between motor and table member, adapted to engage said arm and to open the switch, and a brake associated with the driving connection-between table member and motor and operable in response to movement of said rockshatt.

13. In a chiropractic table comprising a base, a table member pivoted above said base for rotation about a horizontal axis, a motor, and a driving connection between said motor and said table member adapted, in response to rotation of the motor in a single direction, to cause movement of said table member in reverse directions, a shaft associated with said driving connection and having projecting from it a pliirality of members, said shaft being adapted to rotate in a single direction, a control switch for said motor, having a fixed member and a pivoted member, means for manually closing said switch by moving said pivoted member into contact with said fixed member, said pivoted member being in line with the outwardly projecting members on said shaft, said members being adapted, in response to rotation of the motor,-

pivoted member and to open to rotation of the motor in a single direction,

to cause movement of said table member in reverse directions, a control switch for said motor, means for manually closing it to actuate said motor and means for automatically opening it, at the termination of the predetermined excursions of the table member in either direction, said switch including a fixed member, a movable member, a rock shaft, a support for said movable member, mounted on said rock shaft, and an element, associated with the drive between motor and table member, adapted to engage said support, at the termination of the predetermined excursions of the table member, to open the said switch.

Signed at Davenport, county of Scott and State of Iowa, this 2nd day of August, 1926.

DOSSA D. EVINS. 

